000 00294nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a370
_bSHA
100 _aSharma
245 0 _aSystems Approach Its in Education
260 _bHimalaya Publishing House
_aBombay
300 _a552
942 _2ddc
999 _c8174
_d8174